REED Instruments 8689 DIGITAL PH PEN, 0 TO 14PH

REED Instruments 8689 DIGITAL PH PEN, 0 TO 14PH High accuracy, compact IP65 waterproof housing with replaceable electrode. REED 8689 Offers This Digital pH pen displays both temperature and pH simultaneously on a dual LCD display. The 8689 features automatic temperature compensation for accurate readings and includes easy one touch calibration. Features Dual LCD displays temperature and pH measurements User selectable °F or °C Automatic temperature compensation One touch calibration with adjustable points Easily replaceable pH electrode module Data hold function Waterproof housing (IP65) Protective cap keeps sensor moistened Low battery indicator and auto shut off [custom1] REED 8689 Specifications Temperature Measuring Range 32 to 140°F (0 to 60°C) Accuracy ±1.8°F (1°C) Resolution 0.1°F/°C pH Measuring Range 0.00 to 14.00 Accuracy ±0.05 pH Resolution 0.01 pH General Specifications Display Dual Display, LCD Data Hold Yes Auto Shut-off Yes (after 20 mins) Waterproof Yes (IP65) Low Battery Indicator Yes Power Supply 4 x LR44 Cell Batteries Product Certifications CE Operating Temperature 32 to 140°F (0 to 60°C) Storage Temperature 14 to 140°F (-10 to 60°C) Operating Humidity Range 10-80% Dimensions 6.9 x 1.5 x 1.5" (176 x 39 x 39mm) Weight 3.9 oz (110 g) [/custom1]